| Author |
 Topic  |
|
DasBeef
Gold Member
United Kingdom
704 Posts |
 Posted - 01/29/2010 : 03:41:54
|
| I punted my MIT version to a forum member, because I have two MIJ's. I just want a simple pedal to MOD, hence my re-purchase. I also have a CS-3 that I don't like that I might mod soon. Just need some confidence in my soldering! |
 |
|
|
Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 01/29/2010 : 05:29:43
|
quote:
Originally posted by DasBeef
I punted my MIT version to a forum member, because I have two MIJ's. I just want a simple pedal to MOD, hence my re-purchase. I also have a CS-3 that I don't like that I might mod soon. Just need some confidence in my soldering!
Hi DasBeef
May I suggest you practice on some board you might find in some old gear.
Laurie & I, & many others learned this way.
You get to work on real stuff, & it doesn't matter if you botch up a few boards & components:
Things to find to practice on:
Old mono cassette player-radios
Old answering machines.
Old home organs, the big ones with two or more keyboards.
Old pocket radios.
Old 3 in 1 home stereo's.
Old metal chassis amps from the 70's & 80's.
No point using old computer boards, they don't look like any of the stuff you find in pedals.
Once you get a few PCB's for play with, you will start to notice the similarity of the components.
Plus a lot of the old Phenolic-(Bakelite) boards are identical to the early Boss pedals.
Some have very fragile tracks, with will be good experience as well.
Keep us informed of your progress.
And never be afraid to ask what might seem like stupid questions.
It's all part of the learning curve.
And you'll get there sooner, working on this kind of stuff.
The extra long term benefit, is that as you get better, you may even start finding old 70's JRC4558's & some Germanium transistors & Diodes,
to add to you every growing stockpile of vintage bits, you yourself ave recovered from ending up in landfill.
And don't forget to:
Enjoy the learning experience & journey.
Regards Dr. Bob  |
Edited by - Dr. Bob on 01/29/2010 05:33:33 |
|
|
|
cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 01/30/2010 : 22:44:48
|
Comparison of MIJ, MIT, Keeley, Monte 808 and Uraltone mod with internal pictures and sound samples:
http://www.pedalarea.com/sd1.htm |
Edited by - cctsim on 01/30/2010 22:45:29 |
|
|
|
zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 01/30/2010 : 23:10:16
|
I got my kit today,I think i am gonna put it together tomorrow morning.Took pics of the componets
|
|
|
|
zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 01/31/2010 : 03:03:44
|
Well it's snowing, so i got bored cause i couldn't go out, so i put the mod in tonight.Well i had a few problems that i had to figure out. the pedal kept shorting out. So i had to figure out where the pedal was grounding. but that was it mostly.
All that i can say so far, is that is is am improvement over the stock sound.I have been playing around with it.It sounds good but i don't know yet if it would replace any pedal in my board yet.I just have to fool around with it. I really don't hear much diffrence between the ibenez clipping and the boss clipping i find it to be very suttle. it could just be the transistor that i used 1n34a germaninum
I chose this pedal cause I really hate the stock sound of the pedal.It looked like it was the easiest to mod. and i hoped it had the biggest sound improvement.It was alot of fun to do and i will mod another pedal again.I know all of you that are concerned i will post pics up tommorrow i am just to tired right now, and i am going to bed |
|
|
|
Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 01/31/2010 : 12:50:34
|
Hi zerksies
Congratulations on your first pedal Mod.
And it sounds lie you had a heap of fun as well.
Can I ask what was causing the short you spoke about?
Regards Dr. Bob
|
|
|
|
zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 01/31/2010 : 16:36:54
|
| the switch i installed was touching a pot |
|
|
|
zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 01/31/2010 : 19:15:50
|
This is the board finished
Here is the only view i could get of the switch
the backside of the completed board
and the finished product with a green led |
|
|
|
cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 01/31/2010 : 22:10:51
|
It looks very good for a first attempt !
Is the left switch for switching between symmetric and asymmetric clipping using the Ge diode ? I am guessing the difference to be very subtle if any.
The right switch is probably for switching between 2.2k and 4.7k for different gains ?
What is the name of this mode ? |
|
|
|
zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 02/01/2010 : 01:17:20
|
| the right switch was for the clipping and the left was for the diffirent gains. i found both of the to be really useless and have removed both of them. they were both so subtle it was not even funny i could hardly even tell they were on |
|
|
|
cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 02/01/2010 : 13:28:15
|
| For the clipping switch try an LED instead of the Ge diode. The perceived difference will then be quite noticeable. |
|
|
|
zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 02/01/2010 : 15:48:34
|
i took both switches out and was happy with the result.Now i just need a shell for a sd-1
|
|
|
|
ChristoMephisto
Platinum Member
Canada
1288 Posts |
Posted - 02/04/2010 : 01:33:22
|
Modding a SD1 to OD1 specs is pretty sweet,
and simple to do too, even lets you add a switch in the old Tone pot hole |
|
|
|
hot tubes
Silver Member
Canada
162 Posts |
Posted - 02/04/2010 : 05:08:34
|
does anyone have that mod sheet ? that sounds cool !!
SD-1 to OD-1 !! |
|
|
|
ChristoMephisto
Platinum Member
Canada
1288 Posts |
Posted - 02/04/2010 : 10:52:42
|
It was covered in the forum a while back.
I'll try to find it later, or figure out the peices to replace.
Way early here and gotta go to work
Here it is, unfortunately its for the later OD1s with the 4558, a 8 pin opamp and not the 14 pin opamp.
SD1 to OD1
remove the Tone pot, wires, C5 and R8,
R1>1K
C2>.0047
C4>10K
C6>.018 (get this from C4)
lift the top end of R7(10K) and connect it to pad 8 where one of the Tone wires were.
Here's mine, I call it the O-Drive and added a six way rotary for clipping options, personally like stock...
http://i179.photobucket.com/albums/w283/ChristoMephisto/ODrive.jpg
http://i179.photobucket.com/albums/w283/ChristoMephisto/ODriveclippers.jpg
|
Edited by - ChristoMephisto on 02/04/2010 22:58:05 |
|
|
|
Topic |
|
Sd-1 MOds
